Abstract: An aqueous photographic processing solution useful as a photographic developer bath and as a replenisher therefor, consisting essentially of, per liter:______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8g Hydroquinone or a derivative thereof 15 to 35g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmol Alkaline material and buffer to provide a pH at 25.degree. C of 10.0 + 0.8 - 0.5.

Abstract: Compositions, and methods for manufacture thereof, which impart an effective soil release finish to textiles of polyester-containing cellulosic fibers, comprising certain partial alkyl and alkoxyalkyl esters and mixed esters of interpolymers of maleic anhydride with unsaturated compounds, such as styrene and ethylene, and with polyvinyl alkyl ethers in which the weight percentage of esterified interpolymer is critical.

Abstract: The apparatus of the present invention comprises at least one hole-punching device operated by a pneumatic cylinder for driving a punch rod through the peripheral surface and radially to the center of a roll of roofing sheet material. The method of the invention provides for the steps of preparing the sheet roofing material, winding the sheet into a roll, and punching a plurality of perforation holes in the roll from the surface to the center thereof.

Abstract: Rigid surface covering materials such as vinyl or vinyl asbestos floor or wall tiles having pressure sensitive adhesive adhered to one surface thereof and a release agent for the adhesive adhered to the opposite surface. This enables vinyl tile, etc. coated with pressure sensitive adhesive to be stored without the use of release paper.

Abstract: A cotton reinforced, cementitious, hydrated product is made by combining on a dry basis between about 25 and about 75 wt. % Portland cement, between about 1 and about 15 wt. % cotton fiber, between about 3 and about 30 wt. % inorganic filler and preferably between about 10 and about 40 wt. % silica with water to form an aqueous slurry. The slurry is formed into desired shapes such as sheets or slabs and cured by autoclaving to produce the desired product.

Abstract: Lipophilic non-diffusing color formers yielding diffusing dyes are employed in color transfer systems to provide improved diffusion and better quality of color. The color formers are two-equivalent couplers having in the coupling position acyloxy, or sulfonyloxy groups which complete a lactone or sultone ring, respectively, and are stable to hydrolysis under alkaline development conditions. Color-providing material is created by a reaction which opens the lactone or sultone intramolecular ring after the non-diffusing color former reacts with the oxidized color developer molecule. Examples are given of intramolecular 2-equivalent couplers which react with the developer to give yellow, magenta and cyan dyes. The 2-equivalent color formers are unique since they have an intramolecular lactone or sultone ring which opens under oxidative coupling conditions to yield the diffusible yellow, magenta and cyan dyes.

Abstract: A photographic silver halide emulsion wherein the emulsion binder comprises the reaction product of 1) a reactant having an amino, mercapto or hydroxy functionality and a cationic active group with 2) a copolymer of maleic anhydride and an ethylenically unsaturated copolymerizable monomer.

Abstract: A system for controlling the silver ion concentration of a silver halide emulsion made by mixing alkali halide and silver nitrate solutions which are delivered continuously to a vessel at primary addition rates. The silver ion concentration in the vessel is measured to establish the deviation from a desired concentration. Where the error is within a limited or normal range, a low signal selector circuit causes a pump in a secondary flow loop to deliver a secondary amount of whichever solution is needed to offset the deviation. Where the error is abnormal, a high signal selector circuit alters the primary addition rate of the alkali halide solution to offset the deviation.

Abstract: A multiple, potentially variable message printing method is disclosed which comprises: storing desired message information in a computer system; moving a single, continuous strip of paper in the direction of its long axis across printing means operated by said computer system to print the desired message information on the continuous strip; and thereafter folding and severing the single strip of paper to form a plurality of separate, sealed envelope units, each carrying a specific message which may be of variable content if desired. Alternatively, separate paper sheets are processed through such a computer system and then folded into separate message units.

Abstract: Decorative sheet type covering material and process for making same. The material has a substrate, a foamed vinyl plastic layer over the substrate, a thin unfoamed smooth plastic layer over the foamed layer, a metal layer over the smooth layer and a wear layer over the metal layer.

Abstract: High resilience cold cured polyether urethane foam incorporating 2,3-dibromo-2-butenediol-1,4, as a chain extender and fire retardant component.

Abstract: Sheet-type covering material having a decorative fabric base with a wear layer over the face of the fabric and a resilient backing adhered to the back of the fabric is prepared by first forming a plastic wear layer adhered to the face of a sheet of decorative fabric and then forming a resilient backing layer on the back of the fabric sheet. Preferred embodiments include the use of mechanically foamed plastic as the resilient backing layer and a conventional wear layer of polyvinyl chloride or polyurethane. The fabric is preferably textured so as to impart a textured surface to the wear layer.

Abstract: The present invention is directed to a transparency projector, such as a slide or motion picture projector including a compact focusing mechanism having an objective lens carried within a lens barrel supported within a sleeve which is carried within the projector housing for axial reciprocal displacement along the optical axis. The sleeve is provided with means for engaging a guide rod supported within the projector housing for limiting movement of the sleeve to axial movement. A reversible electric motor is supported on the sleeve for movement therewith and is energized in response to slide position error signals received from an automatic focusing system of the type well known in the art. The electric motor operates to drive a disc rotatably carried on the sleeve. The disc is provided with a spiral groove on one face.

Abstract: A textured polyurethane surface is created from a vinyl substrate by first forming a smooth, uncured polyurethane coating on the substrate and then heating the thus coated substrate to a temperature between about 100.degree. and about 160.degree. C for 1 to 10 minutes followed by heating to temperatures of 170.degree. to 210.degree. C for 0.5 to 10 minutes. A textured surface may also be provided on a vinyl substrate having a previously cured polyurethane coating thereon by waiting at least about 1 week after the urethane coating has been cured and then heating the coated substrate to a temperature between about 140.degree. C and about 210.degree. C for 0.1 to 10 minutes. A preferred application is in the creation of textured surfaces on sheet vinyl floor and wall coverings coated with polyurethane.

Abstract: A new overall method of producing chlorinated or brominated compounds of 2-(haloaryl)-4,5-diamino chrysazines from chrysazine without the need for isolation of intermediates at any point during the reaction; and to the novel products produced thereby, which products are good blue dyes having excellent build-up in heavy shades and are intended for dyeing cellulose acetate, cellulose triacetate, polyesters, and the like.

Abstract: N-lower alkyl lactam solvent is recovered from a solution of polymer such as PVC residue in such solvent by adding to the solution a plasticizer for the polymer and then recovering the lactam from the solution by distillation. The plasticizer has a boiling point of at least about 25.degree. C above the boiling point of the lactam solvent. A stabilizer for the polymer may also be used.

Abstract: .Iadd.The invention is directed to a tennis ball which includes a spherical shaped inner-member made of rubber or similar material and filled with compressed air to give it the desired shape and resiliency. An outer cover made of two pieces of non-woven non-napped, needle-punched fabric cut into the form of a figure eight is applied to the inner-member by an adhesive. The needle-punched fabric is formed by a sheet of fibrous material in which the fibers normally extend in a plane substantially parallel with the upper and lower surfaces of the sheet and in which a large number of the fibers extend substantially perpendicular to the upper and lower surfaces of the material which is needle-punched therefrom. As a result, the fibers which extend perpendicular to the upper and lower surfaces interlock with successive layers of the fibers to form a desirable cover layer. .Iaddend.